Apparatus for sighting ordnance.



Patented Mak. 26,A 19m.'

l A fA. COMMUN'. APPARATUS FOR SIGHTING OBDNANC-E (Applicagion Glen Mar.a. who.)-

2 Sheets-Sheet I IIIIII Illllll (No Model.)

THE ECKERY LIYNOGRAPHING co.4 v/AsNlNsvoN, D, c

Patented Mar. 26, |90l. A.'A..GOMM-0N. APPARATUS 'F'.OR SIGHTINGURDNANCE.

Sheds-Sheet 2.

(No Model.)

i UNITED Simms A'PPARATu'si-'oa slcH'TlNc orioiiiieticxla(I f f Y c"ffsrEcIFIcATIoN forming part of Leners Pai-.ent No. 670,579, .datedMaren 26..190-1 Q `Application nea March 6,1900. semina. 7,458. (Numana.5'

To Mln/horn, it may concern:

' Y Beitknown `that I, 'ANDREW AINsLIE CoM- MOM-gentleman, 01563 EatonRise, Ealing,in

. the' county of Middlesex, England, have in-` `ver-itedcerlain new anduseful Improvements in Apparatus for Sighting Ordnance, of which thefollowing is a specification.

ln the accompanying drawings, Figure l is a side view, and Fig. 2 is aplan view with' the telescope removed, of the apparatus for sightingordnance and showing a single multiple cam. Fig. 3 is a cross-section,taken or the axis of the cam-shaft, showing two seis of multiple cams;and Figs. 4 and 5 are diagrams showing an automatic adjustment for thetelescope, which will be described more especially with reference toFig. 3.

Referring now to Figs. 1 and 2,Ais a basepate to he attached t'o the gunor gun-slide. Tiis plate a. carries a .plate b, hinged at c to obtainthe necessary motion in altitude under' .the action of multiple cams ddi. 'lhecam d is operated by a worm e, working the wormwneel f, securedto the shaft g, to 'which the cam d is also attached, said' shaft beingmounted in bearingson the plate d. VA suitable scale (see Fig. l) on theface of a wheel Zi. on the cam-shaft g and an index 10, attached ltothe-plate b, serve to indicate the amount of movement to be given.

On the hinged plaie b are mounted straps i, suitably connected togetherand constituting a telescope-carrier, as shown.

' these straps is secured atj bya pin-joint and the other by aclamping-piece'lc to the plate b. The telescope-carrier is free to turnonthe pin-joint j under the action of a Worm on the rod m, acting ou theforward strap t',

5o lines, Fig. 3; with a vert-ical cross-wire invone which is 'providedwith a toothed sector In, which works in the clamping-piece c. Thus thenecessary side motion can he given tothe telescope and read oft from ascale (see-Fig.

' 2) on the front edge of the hinged plate b, on

which the carrier moves, by means of the pointer `0, attached to thetelescope-carrier.

f? is the Telescope, (not shown in Fig. 2,)y

which may be a single, ofY the ordinary con# struction, but may,.ifdesired, be' a biuocu lar or twin telescopes, as indicated in dottedtuhe or telescope and a horizontal cross-wire in V.he other.

One of The multiple cam' d, kwhich is' composed of lseVeralcam-surfaces, works against'al roller f' or rollers r, which aremounted on theJ axle S, a portion of which is threaded, as'sh'own, andtakes into a threaded 'bearing t'fo'rthf axle s. 'At one end this axleis connectedlto a ymilled cap u, which slides over the endof y :6o

the bearing t. The roller maythusreceive lateral motion and can bebrought to'work against either of .the cam-surfaces by turning the cap uof the screw s, whichl thusmoves` the rollers fr to any desiredposition. Itsexact position is shown by marks on the bearing in wlrirhthe screw works, the cap u covering or efsposing these marks as thescrew is worked in-gpr out.

In place of a multiple ca m composed of sev- .eral cams, as shown, onecam with a smooth face, as if made of an infinite number of camsslightly dilering, may be used, so that any desii d amount of elevationdiering slightly r from the normal' may be givenby the same angularmotion of the cam, and th'us a slight change in the value of theexplosive, or, in the case of an automatic arrangement,therise and fallof the tide (when -this would affect, the position of the object aimedat) may be corrected or allowed for. y

For the purpose of using this apparatus asI an automatic sightingapparatus when the gun is used for an elevation and is of that typecalled quick-tiring (when the gun recoilsnin a V.slide supported Aontrunnion's mounted so as to turnaround aixed vertical post) theduplicatecam arrange-ment d is employed. The additional cam d', which issubstantially like d, I mount on'a sleeve t, which l is operated by handby the worm-wheelf. On

this sleeve o I mount a pinion w,',which engages with a toothed rack(See the diagrams,

Figs. tand 5.) This rack is attached to an arm y, projecting from thatpart `of the gunmouuting which moves onlyl in azimuth, the.

apparatus. being attachedto'the carriage in which the gun slides, whichhas a motion in' .altitude only. The edect of this arrangement is shownin Fig. 4, where 1'2 isa horizontal line andthe direction of theg'un andteleon Fig. 5, where in order to get the telescope 4scope is the same,(point-blank range,) and' j to point to an object on the horizon,`supposing this to be wihin the rangefof the gun; the movemen L Y Y- thisrangesbrings the telescope on the object. `The relation of theA lengthof arm and rack to the size of pinion and shape of cam can' be mafiesuch asto suit any size of gun-mounting or any elevation v'of situationof the gun;

z is a spirit-level von the plate b, and a similar spirit-level may alsobe provided on the side of the base a, as shown in Figs. l and 2. Thetrajectories having been determined for the ammunition to be used itiseasy to determineif the cam or cams have the proper Value, agreeing withthe scale on the disk of the sighting apparatus.- Similarly, it is easyto test the value of the automatic sighting arrangement for anydetermined height and the value of the movement of the wheel acting onthe sloping-facedfcam for slight corrections, the horizontal scalechecking the value of the azimuth movement.

I claim- In means for carrying and adjusting sight# .1,

ing-telescopes 4for ordnance whereby move- Vdients in altitude andazimuth are obtained,` the combination of a 'base adapted to be fixed,

to the gunror the gun-slide on which the gun reeoils and provided'with ashaft carrying multiple cams mounted transversely of the base togetherwith means for .adj usting the camsconsisting` of aworm andworm-wheel toeect the movement in altitude, a telescopecarrier pivoted to the base onone sidev of the ca r11-shaft provided with transversely laterallymovable supporting devices bearing on said cams and means for adjustingthe supporting devices transversely to saideams, the carrier also havinga pivoted element anda slidinlg` element to give a movementin azimuthand means consisting of a worm and segmentrack for operating saidsliding element in azimuth, all combined, a-rrangedvand operating asherein shown and described.

ANDREW AINsLIE COMMON.

Witnesses: f f

H. K. WHITE, W. M. HARRIS.

ssV

